//提取不重复的整数
import java.util.Scanner;

注意类名必须为 Main, 不要有任何 package xxx 信息
public class Main {
   public static void main(String[] args) {
       Scanner in = new Scanner(System.in);
        注意 hasNext 和 hasNextLine 的区别
       while (in.hasNextInt()) {  注意 while 处理多个 case
           int a = in.nextInt();
           if (a == 0) {
               System.out.println(0);
               continue;
           }

           int[] arr = new int[10];
           int ret = 0;
           while (a != 0) {
               int tmp = a % 10;
               if (arr[tmp] == 0) {
                   ret = 10;
                   ret += tmp;
                   arr[tmp] = 1;
               }
               a = 10;
           }
           System.out.println(ret);
       }
   }
}